As a huge fan of the NFL, I found these to actually be quite interesting. The following link has (what appear to be) authentic NFL playbooks in .pdf file. I've spent the last hour reading through them. Anyone who watches the NFL knows how often we hear how complex the offensive and defensive schemes can be, but this really puts it into a unique perspective. http://pigskinplanet.com/index.php?option=com_content&task=view&id=30&Itemid=2 The link contains .pdf files for the 2003 Patriots Offense, 1987 Chicago Defense, and 1998 Tampa Bay Defense.